Ring spinning and twisting frames



Aug. 23, 1960 H. LATUS RING SPINNING AND TWISTING FRAMES 3 Sheets-Sheet 1 Filed Jan. 13, 1959 Fi6.l

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INVENTOR.

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RING SPINNING AND TWISTING FRAMES;

Filed Jan. 13, 1959 3 Sheets-Sheet 2 IN EN TOR. H W

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z- 23, 1960 H. us 2,949,726

RING SPINNING AND TWISTING FRAMES Filed Jan. 15, 1959 3 Sheets-Sheet 3 5' FIG 5 5 5 'I -203936 z .3ZI l 7 0/! ["3 m I l 'lab as-\ 57 u c '7 W25 4 y 35 I I0 c -|6 as T Q 8 37 INVENTOR.

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United States Patent RING SPINNING AND TWISTING FRAMES Hans Latus, Kampten, Allgau, Germany, assignor to Allgauer Maschinenbau G.m.b.H., Kempten, Allgau, Germany The invention is concerned with a ring spinning and twisting frame having one or more restricting rings for limiting the ballooning of the thread, these rings being moved with the ring rail at a constant spacing therefrom during the spinning or twisting operation. In a known ring spinning and twisting frame of this kind, two restricting rings are provided the lower of which is connected fast to the ring rail whereas the upper restricting ring is arranged together with the thread guide on a bar which is displaceable at right angles to the ring rail and after drawing-off is completed, the said bar can be lowered so far that the upper ballooning-restricting ring abuts on the lower restricting ring and then the cop can be doffed from the spindle. However, this dofiing of the cop is hindered by the two restricting rings.

Furthermore, the aforesaid restricting rings in the known constructional form have a diameter which is as large as or larger than the diameter of the twisting or traveller ring. Even though owing to the constant spacing of ring rail, restricting rings and thread guide the thread tension remains constant during the entire spinning or twisting operation,.the aforesaid large diameter of the ballooning-restricting rings causes a relatively consider- .able thread tension which has disadvantageous effects in various respects. Owing to the considerable thread tension or force component directed outwardly at the traveller, relatively considerable friction is caused and therefore the traveller rapidly becomes worn so that thicker travellers have to be used in order to reduce the ballooning of the thread again. Also, the high thread tension impairs the twisting process, bearing in mind the nowadays customary high speeds for the spindle (e.g. 13,000 revolutions per minute) and thus a completely uniformly elastic and full twist is achieved.

In order to obviate the aforesaid disadvantages, the ring spinning and twisting frame according to the invention and more particularly for spinning or twisting in the case of winding conical cops-restricting rings are arranged whose diameter is smaller than the diameter of the twisting or traveller rings, and these restricting rings and also the thread guide are mounted so as to be pivotable in the upward direction through about 90 about horizontal axes, and finally a device is provided whereby, for dofiing the cops, the restricting rings can be moved upwardly relatively to the ring rail up to close below the thread guide.

This novel construction has important advantages:

The upward travel and swinging-back of the restricting rings together with the thread guide liberates the finished cop in such a manner that it can be removed easily and without any obstacle at all from the spindle. In the spinning or twisting operation it is important that not only does the thread tension remain constant during the entire upward and downward movement of the ring rail together with restricting rings and thread guide, but that above all owing to the arrangement of restricting rings of relatively small diameter the thread tension is substantially reduced, for example by about 30%, as compared "ice with the first-mentioned construction. Owing to this relatively low thread tension it is possible to work with lighter travellers, which are only subjected to little stress and therefore to substantially reduced wear. Also, a very uniform elastic twist is obtained over the entire length of the cop, i.e. not only at the beginning of the cop but also at the nose of the cop.

One example of embodiment of the invention will be explained hereinafter with reference to the drawings wherein:

Fig. 1 is an end view of a twisting frame stand,

Figs. 2-4 show details of this frame on a larger scale and in various working positions,

Fig. 5 illustrates the mounting of the thread guuide and restricting rings according to Fig. 1 on a larger scale,

Fig. 6 is a horizontal sectional view taken on the line VIVI of Fig. 5.

In the drawings, 1 designates the spindles, 2 the twisting rings, 3 and 4 restricting rings for limiting thread ballooning, and 5 the thread guides. The drawings, and more particularly Fig. 2, show that the two restricting rings 3 and 4 are smaller in diameter than the twisting ring 2. These restricting rings are advantageously made substantially smaller in diameter, so that, for example, if the twisting ring diameter is 60 mm. the diameters of the restricting rings 3 and 4 are about 30 mm., i.e. half of the twisting ring diameter.

The use of restricting rings of this size, as will also be clear from the drawings, has the result of considerably reducing thread tension. The force component exerted by the thread on the traveller 6 is therefore smaller than hitherto, and is also no longer directed outwardly but from the traveller towards the smaller restricting ring, i.e. inwardly.

Furthermore, there are arranged on the ring rail or in the present example of embodiment on the spaced-apart ring lattice supports 7, vertical guide rods 8 which carry at their upper ends the thread guides 5 which are fixed on the pivot pin 20. The spacing between the twisting or traveller rings and the thread guide eye can be set so as to be always constant. Displaceably arranged on the guide rods 8 are sliding members 10 and 11 which serve to carry pivot pins 12 and 13 so that with these pivot pins or about these pivot pins the restricting rings 3 and 4 can be swung through about upwardly into the positions 3' and 4 respectively shown in chain-dotted lines. Mounted on each of the guide rods 8 are two chain drives or the like, to each of which one of the sliding members 10, 11 is fixed. In the illustrated advantageous embodiment, an endless chain drive 14 or 15 is provided for each sliding member on each guide rod 8, the endless chain .14 being connected fast at 16 e.g. by means of a pin to the sliding member, 10 and the other endless chain 15 being connected fast at 17 to the sliding member 11.

ment, it is advantageous for the supporting piece carrying the pivot pin 20 of the thread guides 5 to be constructed to act at the same time as a bearing for the upper chain wheels 18.

Fig. 2 shows the position at the beginning of twisting. The ring lattice 22 or rather the ring lattice carriers 7 are moved upwards and downwards on vertical guides 23 carried by the stand 27 of the frame, by means of a known lifting device 24, or are so controlled that the cop is Wound to a conical shape instead of cylindrically. In this twisting operation, the ring lattice 22, restricting rings 3 and 4 and thread guides 5 remain unaltered in their positions relatively to one another which they occupy in Fig. 2.

After drawing-off has been completed, the machine is automatically stopped. Then by hand, or automatically 3 by driving the endless chains 14 and 15 with rodding, the two restricting rings 3 and 4 are moved upwards as shown in Fig. 3 up to the supporting piece 21. Then, as is customary, the entire device is wound downwards and as a result the ring lattice 22 is moved downwards into the starting position (Fig. 4). In this position, the thread guide is already again at the correct working height relatively to the twisting or traveller rings. Then-either by hand or automatically-both the thread guides 5 and the two restricting rings 3 and 4 are swung upwards into the positions 3, 4, 5' shown in chain-dotted lines in Fig. 4.

The cops C can then be doffed freely from the spindles 1 and new tubes can be placed on the spindles. When this has been done, the thread guides and restricting rings are swung back automatically or by hand into the normal position and at the same time by chain control ie by driving the endless chains 14 and 15, the restricting rings 3 and 4 are moved back again into their starting position as shown in Fig. 2. Thus drawing-01f can commence again.

In Figs. 2-4, the chain arrangement 14, 15 shown is of such a kind that it can be controlled by rodding arranged longitudinally of the frame.

Control can also be effected in accordance with Figs. 1, 5 and 6, namely in such a manner that chain wheels 25 and 26 are arranged on through shafts parallel to the frame as shown in Fig. 1. The mounting for the through shafts is rigid and does not need to be adjustable as regards height. By means of a hand wheel or automatically, the upper chain wheel 25 can be moved by turning the upper shaft and the lower chain wheel 26 can be moved by turning the lower shaft. The chain which is moved with the wheel 25 is rigidly connected to the upper ring holder 11. The chain which is moved with the wheel 26 is rigidly connected to the lower ring holder 10. The second chain wheel serves always only as a guide wheel for the respective chain and rotates idly therewith on the other shaft. Thus, when the wheel 25 rotates, the associated wheel on the other shaft rotates idly, and vice versa.

Having regard to the length of a twisting frame, the chain-wheel shafts, expediently constructed as hollow shafts, are sub-divided into shaft sections 29a and 30a, these sections corresponding to the spacing of the stands 27 of the frame. Similarly, the pivot pins for the thread guides 5 and also the pivot pins 13 and 12 for the restricting rings are sub-divided as illustrated in Fig. 6 at the pin parts 13a and 13b. According to the drawings, there is rotatably mounted on each of the rearward parts 21a of the supporting piece or bearing member 21 and also the bearing piece 28 (Fig. 1) serving to support the lower chain-wheel shaft a shaft section 30 serving as a coupling, which is connected fast to the tubular shaft sections 29a and 30a, e.g. by means of a locating pin 31. Furthermore there is mounted on each supporting piece 21 and on the sliding members 11 and 10 a coupling element 32, each of which is connected fast to the pivot pin parts disposed one behind the other. According to Fig. 6, the two pin parts 13:: and 1317 are inserted in the coupling element 32 and connected fast thereto by locating pins 33.

According to Figs. 5 and 6, two chain wheels and 25a are arranged at the two sides of the supporting piece lie: on the upper chain-wheel shaft 29a, a, 30, the wheel 25 being a driving wheel and being connected fast, e.g. by means of a locating pin 34, to the shaft section 30, whereas the other chain Wheel 25a is mounted freely on the shaft. In the same way as shown in Fig. 1, the lower chain-wheel shaft 35 is mounted in the bearing piece 28 arranged on the guide rod 8, and there are also arranged at the two sides of the said piece two chain wheels. Chain wheel 26 is connected fast to the shaft to act as driving wheel for the chain 14 which passes over chain wheel 25a. The chain wheels situated vertically one above the other are connected to one another by endless chains 15 and 14. The chain 15 driven by the wheel 25 engages by means of a pin 17 arranged on the chain 8 in the sliding member 11, and the other chain 14, driven by the lower chain driving wheel 26, engages in the sliding member 10 by means of a pin 16.

In the illustrated advantageous example of embodiment, the pivot pins 20, 13 and 12 are constructed as squaresection rods which comprise holes 36. The thread guides 5 and carriers 37 and 38 of the restricting rings 4 and 3 are inserted in these holes and fixed therein by means of screws, expediently grub screws 39. All the pivot pins 20, 13 and 12 are arranged in a vertical line one above the other, as shown in Fig. 5. In order that the restricting rings 3 and 4 can be swung into the horizontal position 3', 4, the ring carriers 37, 38 are appropriately cranked as shown at 4% and 41.

In order to hold the pivot pins fast both in the operative position of the thread guides and restricting rings and also in the vertical position thereof, a locking device is provided both on the supporting piece 21 and also on each of the sliding members. This device consists of a ball 42 which is pressed by means of a coil spring 43 and an adjusting screw 4-4 against the central part of the coupling element 32. This ball can lock in two correspondin recess 45 and 46 of the coupling element 32.

As the drawings show, the thread guides 5 are not arranged horizontally as hitherto but advantageously are directed upwardly at an inclination.

The invention is not limited to the illustrated example of embodiment. For example, the control and movement of the restricting rings 3 and 4 on the guide rods can also be carried out hydraulically, if appropriate, instead of merely by mechanical means.

I claim:

1. In a ring spinning and twisting machine, in combination, a support; a spindle mounted on said support; ring rail means including a traveler ring means and movably mounted on said support for moving said traveler ring means relative to said spindle; a guide member fixedly mounted on said ring rail means and extending parallel to said spindle; a plurality of restricting ring means mounted on said guide member for move-men relative to each other and to said traveler ring means; and operating means connected to each restricting ring means for moving the same on said guide member independently of said traveler ring means and of the other restricting ring means.

2. In a ring spinning and twisting machine, in combination, a support; a spindle mounted on said support; ring rail means including a traveler ring means and movably mounted on said support for moving said traveler ring means relative to said spindle; a guide member fixedly mounted on said ring rail means and extending parallel to said spindle; a thread guide means secured to said guide member; a plurality of restricting ring means mounted on said guide member for movement relative to each other, to said thread guide means, and to said traveler ring means and being located intermediate said thread guide means and said traveler ring means; and operating means connected to each restricting ring means for moving the same on said guide member independently of said traveler ring means, of said thread guide means, and of the other restricting ring means.

3. In a ring spinning and twisting machine, in com bination, a support; a spindle mounted on said support;

ing rail means including a traveler ring means and movably mounted on said support for moving said traveler ring means relative to said spindle; a guide member fixedly mounted on said ring rail means and extending parallel to said spindle; a thread guide means. including a support member fixed to said guide member, and a thread guide movably mounted on said support memher for movement between an operative position and an inoperative position retracted from said spindle to permit doffing of said spindle; a plurality of restricting ring means mounted on said guide member for movement relative to each other, to said thread guide means,

and to said traveler ring means and being located inter-.

A game tracted from said spindle to permit dofiing from said spindle; and operating means connected to each restricting ring means for moving the same on said guide mem ber independently of said traveler ring means, of said thread guide means, and of the other restricting ring means.

4. An arrangement as set forth in claim 3 wherein said restricting rings and said thread guide are pivotally mounted on said slide members and on said support member, respectively, and wherein said restricting rings are turnable through 90 between said operative and inoperative positions, and wherein said thread guide in said inoperative position thereof extends parallel to said restricting rings in said inoperative positions thereof.

5. In a ring spinning and twisting machine, in combination, a support; a spindle mounted on said support; ring rail means including a traveler ring means and movably mounted on said support for moving said traveler ring means relative to said spindle; a guide member fixedly mounted on said ring rail means and extending parallel to said spindle; a plurality of restricting ring means mounted on said guide member for movement relative to each other and to said traveler ring means; and operating means for each restricting ring means, each operating means including a pair of wheels mounted on said guide member, an endless loop passing about said wheels, and means connecting said loop to one restricting ring means so that said restricting ring means can be moved on said guide member independently of said traveler ring means and of the other restricting ring means.

6. In a ring spinning and twisting machine, in combination, a support; a spindle mounted on said support; ring rail means including a traveler ring means and movably mounted on said support for moving said traveler ring means relative to said spindle; a guide member fixedly mounted on said ring rail means and extending parallel to said spindle; a thread guide means including a support member fixed to said guide member, and a thread guide movably mounted on said support member for movement between an operative position and an inoperative position retracted from said spindle to permit dofling of said spindle; a plurality of restricting ring means mounted on said guide member for movement relative to each other, to said thread guide means, and to said traveler ring means and being located intermediate said thread guide means and said traveler ring means, each restricting ring means including a slide member guided on said guide member, and a restricting ring mounted on said slide member for movement between an operative position concentric with said spindle and said traveler ring means, and an inoperative position retracted from said spindle to permit dofling from said spindle; and operating means for each restricting ring means, each operating means including a pair of wheels mounted on said guide member, an endless loop passing about said wheels, and means connecting said loop to one of said slide members so that each of said restricting rings in said operative position can be moved independently of the other restricting rings between a position substantially uniformly spaced from each other, from said thread guide and from said traveler ring means, and a position closely spaced from each other and from said thread guide so as to be moved to said inoperative positions.

7. In a ring spinning and twisting machine, in combination, a support; a spindle mounted on said support; ring rail means including a traveler ring means and movably mounted on said support for moving said traveler ring means relative to said spindle; a guide member fixedly mounted on said ring rail means and extending parallel to said spindle; a thread guide means including a support member fixed to said guide member, and a thread guide pivotally mounted on said support member for movement between an operative position and an inoperative position retracted from said spindle to permit dofling of said spindle; a plurality of restricting ring means mounted on said guide member for movement relative to each other, to said thread guide means, and to said traveler ring means and being located intermediate said thread guide means and said traveler ring means, each restricting ring means including a slide member guided on said guide member, and a restricting ring pivotally mounted on said slide member for movement between an operative position concentric with said spindle and said traveler ring means, and an inoperative position retracted from said spindle to permit doffing from said spindle; and operating means for each restricting ring means, each operating means including a pair of wheels mounted on said guide member, an endless loop passing about said wheels, and means connecting said loop to one of said slide members so that each of said restricting rings in said operative position can be moved independently of the other restricting rings between a position substantially uniformly spaced from each other, from said thread guide and from said traveler ring means, and a position closely spaced from each other and from said thread guide so as to be turned to said inoperative positions.

8. An arrangement as set forth in claim 7 wherein said support member of the thread guide turnably supports one of said wheels.

9. In a spinning and twisting machine, in combination, a support; a set of spindles mounted on said support; ring rail means including a set of traveler ring means and movably mounted on said support for moving said traveler ring means relative to'said spindles; a set of guide members fixedly mounted on said ring rail means and extending parallel to said spindles; a set of thread guide means respectively secured to said guide members; a plurality of restricting ring means mounted on each of said guide members for movement relative to each other, to said thread guide means, and to said traveler ring means; and a set of operating devices respectively associated with said guide members and mounted on said ring rail means, each operating device including a plurality of operating means respectively connected with the restricting ring means on the respective guide member for moving the respective restricting ring means independent-1y of the other restricting ring means on the same guide member.

10. In a ring spinning and twisting machine, in combination, a support; a set of spindles mounted on said support; ring rail means including a set of traveler ring means and movably mounted on said support for moving said traveler ring means relative to said spindles; a set of guide members fixedly mounted on said ring rail means and extending parallel to said spindles; a set of thread guide means respectively secured to said guide members; a plurality of restricting ring means mounted on each of said guide members for movement relative to each other, to said thread guide means, and to said traveler ring means; and a set of operating devices respectively associated with said guide members and mounted on said ring rai-l means, each operating device including a plurality of operating means respectively connected with the restricting ring means on the respective guide member for moving the respective restricting ring means independently of the other restricting ring means on the same guide member, said operating means of said operating devices being respectively connected to each other for simultaneously moving corresponding restricting ring means mounted on all said guide members relative to the other restricting ring means which are mounted on all said guide members.

11. An arrangement as set forth in claim 10 wherein each operating means includes a pair of chain wheels,

and an endless chain, wherein each endless chain is connected to one of said restricting ring means; and including a pair of shaft means, each. shaft means supporting one set of chain wheels of said pairs of chain wheels, and the other shaft means supporting the other chain wheels of said pairs of chain wheels.

12. An arrangement as set forth in claim 11 wherein each restricting ring means includes a slide member slidably mounted on the respective guide member and connected to the respective chain, and a restricting ring pivotally mounted on said slide member for movement between an operative position coaxial with the respective spindle and a retracted inoperative position permitting dofling from the spindle; and wherein the pivot axes of said restricting ring means on the same guide member are transversely spaced with respect to said guide member so that said restricting rings can be turned to inoperative positions extending parallel to each other and to said guide member.

13. In a ring spinning and twisting machine, in combination, a support; a set of spindles mounted on said support; ring rail means including a set of traveler ring means and movably mounted on said support for moving said traveler ring means relative to said spindles; a set of guide members fixedly mounted on said ring rail means and extending parallel to said spindles; a set of thread guide means respectively secured to said guide members; two restricting ring means mounted on each of said guide members for movement relative to each other, to said thread guide means, and to said traveler ring means; an upper shaft means supported on said ring rail means and a lower shaft means supported on said ring rail means and extending across said guide members; and a set of operating devices respectively associated with said guide members, each operating device including two chain drives, each chain drive including a chain wheel mounted on said upper shaft means and a chain wheel mounted on said lower shaft means, an endless chain passing about said chain wheels, and means connecting said chain to one of said restricting ring means, the upper chain wheel of one of said chain drives being secured to said upper shaft means and the lower chain wheel of said one chain drive being freely turnable on said lower shaft means, and the lower chain wheel of the other chain drive being fixed to said lower shaft means, and the upper chain wheel of the other chain drive being freely turnable on said upper shaft means so that by operation of said shaft means corresponding restricting ring means mounted on all said guide members are moved relative to the other restricting ring means which are mounted on all said guide members.

members; and including coupling means connecting said shaft sections of said upper shaft means, and other couplying means connecting said shaft sections of said lower shaft means.

16. An arrangement as set forth in claim 15 wherein said shaft sections are tubular; and wherein said coupling means are shaft portions passing through said bearing members and projecting into adjacent tubular shaft sections, and secured to said adjacent shaft sections for coupling the same to each other.

17. An arrangement as set forth in claim 13 wherein said thread guide means includes a thread guide, and a pivot pin supporting said thread guide on said guide member for turning movement; and wherein each of said restricting ring means includes a slide member slidably mounted on a guide member, a restricting ring having a projecting carrier portion, and a pivot pin turnably supporting said carrier portion on said guide member.

18. An arrangement as set forth in claim 17 wherein each of said pivot pins has a portion of square cross section formed with a hole, said thread guide and projecting carrier portions of said restricting rings being located in said holes.

19. An arrangement as set forth in claim 18 wherein said pivot pins on the same guide member have axes located in a vertical plane; and wherein said carrier portions are cranked.

20. An arrangement as set forth in claim 17 and including means for locking said pivot pins in two positions angularly spaced at an angle of substntially References Cited in the file of this patent UNITED STATES PATENTS 819,496 Allgood May 1, 1906 2,081,416 Vicq May 25, 1 937 2,770,093 Gwaltney Nov. 13, 1956 2,867,074 Newton Jan. 6, 1959 FOREIGN PATENTS 717,283 Great Britain Oct. 27, 1954 

